CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's IOMMU (Input-Output Memory Management Unit) subsystem, specifically in the handling of IOAS (IOMMU Address Space) references during error conditions. If the xa_store() operation fails, the system may not properly release the current IOAS, potentially leading to resource leaks or denial of service. Organizations using Linux kernel versions susceptible to this issue should prioritize patching to mitigate potential impacts on system stability and performance.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: iommufd: Release current IOAS on xa_store() failure iommufd_take_all_iova_rwsem() takes an object reference and the iova_rwsem write lock before storing the IOAS in the temporary ioas_list xarray. If xa_store() fails, the current IOAS has not been inserted into ioas_list yet. iommufd_release_all_iova_rwsem() only unwinds IOAS objects already present in that xarray, so it cannot release the current IOAS. Release the current IOAS rwsem and object reference before unwinding the previously stored entries.